This series of program-controlled withstand voltage tester is a high-performance safety tester designed with high-speed MCU and large-scale digital circuit. Its output voltage and output voltage rise and fall. The frequency of the output voltage is controlled by the MCU. It can display the breakdown current and voltage value in real time, and has software calibration function. It is equipped with PLC interface, RS232C, RS485, USB device and USB Host interface. It can be easily combined with computer or PLC to form a comprehensive test system. . It can quickly and accurately measure the safety of household appliances, instrumentation, lighting appliances, electric heating appliances, computers, and information machines.